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人気のある三角関数 >

144^2=43.27^2+72^2-243.2772*cos(x)

解

14 4^{2} = 43.2 7^{2} + 7 2^{2} - 2 \cdot 43.27 \cdot 72 \cdot cos (x)

解

以下の解はない : x \in R

解答ステップ

14 4^{2} = 43.2 7^{2} + 7 2^{2} - 2 \cdot 43.27 \cdot 72 cos (x)

辺を交換する

43.2 7^{2} + 7 2^{2} - 2 \cdot 43.27 \cdot 72 cos (x) = 14 4^{2}

数を乗じる:

2 \cdot 43.27 \cdot 72 = 6230.88

43.2 7^{2} + 7 2^{2} - 6230.88 cos (x) = 14 4^{2}

43.2 7^{2} = 1872.2929

1872.2929 + 7 2^{2} - 6230.88 cos (x) = 14 4^{2}

7 2^{2} = 5184

1872.2929 + 5184 - 6230.88 cos (x) = 14 4^{2}

数を足す:

1872.2929 + 5184 = 7056.2929

- 6230.88 cos (x) + 7056.2929 = 14 4^{2}

14 4^{2} = 20736

- 6230.88 cos (x) + 7056.2929 = 20736

7056.2929

を右側に移動します

- 6230.88 cos (x) + 7056.2929 = 20736

両辺から

7056.2929

を引く

- 6230.88 cos (x) + 7056.2929 - 7056.2929 = 20736 - 7056.2929

簡素化

- 6230.88 cos (x) = 13679.7071

- 6230.88 cos (x) = 13679.7071

以下で両辺を割る

- 6230.88

- 6230.88 cos (x) = 13679.7071

以下で両辺を割る

- 6230.88

\frac{- 6230.88 cos ( x )}{- 6230.88} = \frac{13679.7071}{- 6230.88}

簡素化

cos (x) = - \frac{13679.7071}{6230.88}

cos (x) = - \frac{13679.7071}{6230.88}

- 1 \leq cos (x) \leq 1

以下の解はない : x \in R

グラフ

人気の例

sin(8x+48)=cos(-4x+26)

sin (8 x + 48) = cos (- 4 x + 26)

3cos(x)+sec(145)=1

3 cos (x) + sec (14 5^{\circ}) = 1

sec^2(x)+3tan^2(x)=13

sec^{2} (x) + 3 tan^{2} (x) = 13

1609.3=(1.133^2)/((9.8)tan(θ))

1609.3 = \frac{1.13 3 ^{2}}{( 9.8 ) tan ( θ )}

2 sec^{2} (2 x) = 0